A weight suspended from a spring is seen to bob up and down over a distance of 39 cm twice each second. what is its frequency? answer in units of hz.

Yasmin is testing an unknown solution to determine whether it is an acid or a base. She dips red litmus paper in the solution. It remains red. What can she conclude about the sample?

The asteroid belt circles the sun between the orbits of mars and jupiter. one asteroid has a period of 5.0 earth years. assume a 365.25-days year and msun = 1.99 * 1030 kg. what is the asteroid's orbital radius?

Which ball has the greater average speed during the 1-s interval after release (assuming neither hits the ground during that time) ?

Which is a part of interphase? A. S phase B. Anaphase C. Telophase D. Cytokinesis

An athlete whirls an 8.2 kg hammer tied to the end of a 1.4 m chain in a simple horizontal circle where you should ignore any vertical deviations. The hammer moves at the rate of 1.85 rev/s.

The longer coffee sits on a desk, the cooler it becomes. True or False? The length of time on the desk is a function of the temperature of the coffee. A. True B. False

Given the potential on a spherical shell of radius R to be V (R, θ) = V0 cos θ, calculate V (r, θ) both inside and outside the shell.

The amplitude of oscillation is the maximum distance between the oscillating weight and the equilibrium position.

A runner makes one lap around a 200m track of 25s. What were the runners average speed and average velocity?

Which change occurs when an atom undergoes alpha decay?